1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a5e3b5cc574f203bf35afaf580c66b70845fb8e45043554cfb8ef49773ba93. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/836695bc-0dcf-4333-94fe-ad335eecc87b.json and https://artists.proofprofile.net/proofs/artist/836695bc-0dcf-4333-94fe-ad335eecc87b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd79230918c647597d6b9990483a49a8d53a7900addc7ec679567878481e83. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825d99153598bfbe21445ee5c7b68ddf3d69b105ebd16d8f27becef30c0d5919. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32310819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece7ea8d68763496ac8cda587bb5ca2da9af319499801b7eccd0a38024724f75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073576fb6e92d63181f2864a0257ba356ac27d32d94c813d31776ad32a504c0c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32311452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d803fbb57348c3a7327e56735a9ed404328b55a5478336af588120962cc1d0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3823614990932d3c7a721bc53b6e03a15cdc364ce5299c01583ac77e5d14756b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25bd61829165115d0f17ac06bda652356351971f45f8ff340f8f986f285218. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32310258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86745482ef94ee453932d591fb7e2e0b0658ccc916f9be46e78912e2c06dad6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7708b17003c6a8649b366e05bde98f2079fa9aab6553afb2d6ee7e537263d0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6048e1c281614525d3cb3ce15292375f2cae9a48c9508d35716d971091d0d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294750136b4a7fb853a7804d830dbfe041a54f19f3cf92c6adca2c3766b4c3c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6410b6e05da9ca16a47663cdc1e8c07ad9786ecea6e46c5dac8dd6c8cb24114. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32319801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d513cea955c103362105e581466bb41b929d7b568ad9c1a69a1cd9bfbf282f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWJC12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895d125cac6466357c859ccc10d87692a3a81abed922ebfc15f41ee97092ad3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWJC12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3924ed340ef677b1d266dc2582ed135a12e0215182b834a7362cbaea0d0060c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWJC12300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073576fb6e92d63181f2864a0257ba356ac27d32d94c813d31776ad32a504c0c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32311452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825d99153598bfbe21445ee5c7b68ddf3d69b105ebd16d8f27becef30c0d5919. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32310819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25bd61829165115d0f17ac06bda652356351971f45f8ff340f8f986f285218. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32310258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0fde7e0c4a881fe16e415fc30906948385fd8b617655523ba9f1fb7d11b245. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWAE32403812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0963a65eab30b79b3c4b050d1faa50fe907a64805488071b80d7069ab2f5b08b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732421294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa206a4ac36fefc5363ca9a3fcd1a9a5447c65663b541513a23f422851ce95184. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCC32505819.